traffic is already thick in san francisco south of market area because of the oracle open world convention in masconi center. many say the roads won't be able to handle all that traffic. >> i think it'll be too many cars. as it is right now there's too many cars. >> reporter: there are several events bringing people to the city. 49ers and giants home games, fleet week, the castro street fair, two parades, and america's cup event and a three day bluegrass festival. more than 1 million people are expected. ed riskin head of san francisco's transportation agency is down playing reports this will put a strain on muni. >> that's not accurate. we have a great plan for not massive transit, but for all the regional transit providers. we've been working on this for a long time. we knew this weekend was coming. >> reporter: muni, b.a.r.t., caltrain and san francisco bay ferries have all added extra service to accommodate the events. and if you're walking, extra parking control officers will be around to monitor pedestrian safety at many major intersections. >> we're here in the city because it's vib